Stoker



E. MARTIN Nov. 2, 1937.

STOKER Filed Jul 20, 1934 2 Sheets-Sheet 1 R.. mm mf vd m W Z W 5 ATTORNEY.

Nov. 2, 1937.

E. MARTIN 2,098,191

STOKER Filed July 20, I934 2 Sheets-Sheet 2 INVENTOR 29c 39 BY flzgefie fia'ffin ATTORNEY.

Patented Nov. 2, 1937 I gTTES STOKER Eugene Martin, Erie,

assignments,

parry, Inc, New York,

Delaware Pa., assignor, .by mesne to The Standard Stoker Com- N. Y., a corporation of Application July 20, 1934, Serial No. 736,203

7 Claims.

This invention relates to stokers for locomotives or other steam generating devices and it appertains particularly to stokers of the character H disclosed in the United States Letters Patent No.

51,947,723, granted February 20, 1934, to Nathan M. Lower. 7

It is accordingly the main object of the invention to provide a stoker of the aforesaid character V in which the chambered floor portion, known in lO' the trade as the jet plate, of the discharge conduit is formed separate from the conduit and secured thereto by fastening members engaging the conduit and upstanding flanged extensions of the jet plate. More specifically the invention contemplates extending the chambers of the body portion of the jet plate into the flanged extensions which are apertured for the introductionof pressure fluid to the chambers. Another object of the invention is the provision of a stoker discharge conduit and a separable chambered jet plate arranged with the chambered portion of the main body thereof positioned approximately within the confines of the firing opening of the firebox.

25 Other objects reside in the particular construction of the jet plate and the discharge conduit as individual parts; in their arrangement one with the other; and in the relation of the fuel deflectors to the discharge conduit and to they jet plate, as hereinafter fully described and as shown on the accompanying drawings, in which, Figure 1 is a detail vertical section through the upright wall of a boiler firebox showing the device of the invention applied thereto in similar sec- 5 'tion;

Figure 2is a fragmentary sectional view taken on the line 2-2 of Figure 1;

Figure 3. is a fragmentaryvertical elevation of the structure shown in Figure 1 considered on the. 40 line 33 thereof Figure lv s a front elevation of the jet plate embodied in the device of the invention;

Figure 5 is a plan view of the jet plate with portions shown in section on the line 5--5 of 45 Figure 4 and with other portions broken away;

Figure 6 also is a plan View of the jet plate but with some portions shown in section taken on the line 'B-6 of Figure 4 and with other portions broken away; and

Figure 7 is a view similar to Figures 5 and 6 but with a portion of the jet plate shown in section on the line 1-4 of Figure 4 and with other p01" tions broken away. Throughout the following description and the 5 claims it will be understood that such terms as rearwardor forward or equivalent expressions are employed with respect to the direction of flow'of fuel to the firebox Referring to the drawings, there is shownat It! a portion of an upstanding wall-or backhead of a boiler firebox havinga firing opening ll therein to which fuel is advanced by the screw [2 housed within the inclined. stoker discharge conduit l3 which opens. endwise into Rearward of the conduit l3 and universally. connected thereto there is disposed the rearwardly extending conduit section .M, which may be of any wellknown construction, leadingrearwardly to a source of fuel supply from which the fuel is carried forwardly by a. screw conveyor l2a into, the discharge conduit l3 through which it is advanced by the screw l2. Themouth portion l5 of the'discharge conduit flares laterally, as best shown in Figure. '2, and carries the laterally extending flanges l6, l l arranged inspaced relation with the backhead l0 and which at their. remote ends turn rearwardly formingthe longitudinally extending flan'gesflfia, Hot for attachment re-' spectively to-the brackets l3. and is which may be secured to the boiler backhead H] in any desired manner to support the upper end portionof theconduit l3. Bolts as at Elfisecure the conduit. to the brackets. The lower end of conduit l3 also issupported from the. boiler backhead iii by a bracket 2| which is provided with a seat 22 for receiving the foot member ZS'of the conduit. In this manner the discharge conduit it is rigidly mounted with the boiler backhead. I

Preferably, the'bottom wall or floor 24 and the side walls 25, 26 of the conduit at their forward ends terminate in substantially. the same transversely extending vertical plane at a point rearward of but closely adjacent the backhead lo opposite the firing opening H. This greatly facilitates machining operations of the conduit and associated parts.

A jet plate 21 i s mounted at the forward end of the conduit l3 .to form a continuation of the bottom wall 24 extending from the upper end of the latter into the firing opening ll Where the jet plate is formed with the transversely extending upstanding front face 28 having jet openings as at 29 for the discharge of pressure fluid over and above the forwardly extending distributing table 30. This table may be supported from thejet plate in any suitable manner and its construction and relation with the jet plate is of well known. construction forming no part of the present invention and therefore will not be further described.

the firing opening.

a broad flat floor portion 3| extending the full" in eifect, an extension or continuation of the floor 24thereof. At opposite sides of the floor 3| the jet plate is provided ,with upstanding rearwardly V extending oppositely spacedflanged extensions 32, .33 ior attachment to the flanges l6, I1 of the dis-; V .l 'chargeconduit 13.1 Fastening members suchasthe bolts 34 secure the flanged extensions and thereby the; jet plate to the aforesaid flanges of the conduit and thus maintain the portion 3| onto the distributor and 4 to 7 inclusive;

the chambers 35,36, which chambers extend from the jet openings in the'front face: 28 01 the jetplate rearwardly through the body portion of the plate into a respective flanged-exten sion.

7 extension 32 apertured as at 3'l' for the'intro as 'ati3'la" for the 35 and hence to the jet duotion of pressure :fluid to the chamber." Likewise, from these'figures it willlbe observed that thechamber 36, which supplies pressure fluid to the jet openings 29b,' extends rearwardly and, upwardly into the flanged extension 33 apertured} introduction of pressure fluid to this chamben "Supply pipes 31b and 31c, .extending. res iiec tivelythrough the elongated slots 38,. 38a in'thej;

flanges I 6 and ll. of the conduitfcommunicate respectively with the aperturesj'ldrand 31IiorF supplying pressure fluid to'the chamb'ers 36 and the lower portion or the 39, are supplied with pressure fluid froml the single chamber 39, as bestishown' in, Figures ,1,- 1 4" and 7'. This chamber extends rearwardlyiton the lo'werfportion of the flangedextension 133 apertured at 39a toreceive; agsupplypipe 39b. through the slot'38 for the introduction or pres? sure fluidto the chamber 39. i 1

Above the jet'openings 28c aredisposed two" horizontal rows ofjet openings dividedcentrallyj into the groups 29d and 29ef The jet openings the chambers-40; which, as best "shownin. Figures 1, .4 and fi, extends; lrearwardlyfthroughthe body portion'ofthe jet 29d communicate with plate into the flanged extension- 32 apertured at 40a to receive the supply line 4011 extendin'gfi through the slot 38a for supplying pressure fluid to the chamber140 and hence to the-jetaperV- the group of {jet openings Ede communicates with a chamber 4'l'extendture's 29d. Similarly,

ingithrough the. body portion of the jet "plate jet plate in: proper relation with the conduit floor124. It will be observed the flanged extensions '32', 33' a're spaced at the'sides of the disehargemouth l 5'and I do notinterfere with the movement of the-fuelover the'floor 'tab1e30. v 1 r Pressure fluid is conducted to the openings 29 by a plurality of chambers in the jet -plate.- Thesechambers are-best illustrated in Figures 1,} Referring to these figures and'particularly to Figures 1, 4 and 5; it willbef 'seen that the sidewardly directedljets 29a, 29b

are supplied with pressure fluid respectively from a the discharge From Figures '1 andf5 it willbelnoted i that the chamber '35 extends into' the flangedv 'tively at 59a,

apertures 29b;and 23a; Similarly, the jet openings :29e, spaced. in a" I horizontal row across jet 'face 28 in a position to project overthe table i 7 V the jet plate to guide the fuel forwardly jet plate floor 3l'into the zone of action of the 50 7 i a w 7 "a,o98,191; Rearward of the face 28'.thejet" plate includes pendently of one another for independent regulationbf the pressure fluid to the diiferent groups" of jet openings for attaining,;in cooperation with the distributing table "30, even distribution of the fuel over the grates of the firebox-:46.

its floor 3land within the'confines oi the firing opening; and by extending 'these chambers. laterally and then rearwardly and upwardly'intof the flanged extensions 32. and 33' instead of rearwardly along and beneath the floor 3| to the I" rearwardiend thereof it is possible to place the '7 This construction of the rjetrplate makes a compact arrangement of the chambers under ithe 'jetj plate closer to the lower marginal edge it is desirable to-reduce the space occ'upiedb'y which: in the drawingszat'Figure 1 is indicated at and the cab floor at 48.

In a'stoker of' this character, the screw-l2 action of its impelling flights, there is a, tendency forthe fuel to than the other.

fuel deflectors respective side walls 'ther'eof and rearward of the jet plate 21. The axes ofthe pivots m, 51m

are, disposed substantially perpendicular to the that by swinging the deflectors 50,15l about their conduit in] the locomotivecab 80 t the distributing tablelisfl provided by theoppositely disposed upstanding"- 53; 5|:which are pivoted respec 1 51a in thelconduit l3 adjacentaxes the fuel may be deflected laterally to one.

side of the jet plate or the otheras desired; In

eiTect the fuel defiectorsfconstitute' an expansible and contractible extended mouth portion of the dischargeconduit. ,It will be observed the deflectors extend beyond-the side walls of the conduit forwardly to a point. adjacent'the front face 28 of'the jetplate' 27 and thatthey'are- 32, 33 of: 7 over the;

spaced between theflanged extensions uting table 30.

' pressure fluid blasts sweeping across theldistrib- Adjusting screws 55; 56 extending substantially parallel to the backhead l0 pass through lugs on V j the flanges 416a, Hid andare threadedfi'nto the conduit side walls 25, '25 forward of the pivots Ma, Ma to'contact the deflectorsifi, 5| formovr.

ing them inwardly of theconduit, The deflectors Y may be permittedlto'move'outwardly of theconlduit' b'y withdrawing the adjusting screws'55; 56

with theadjusting screws.

invention provides a verycompact' arrangement betweenthe jet" plate and the stoker discharge r m to the extent desired and the'pressure of the fuelv will spread the deflectors until stopped by contact conduit whereby a minimum of space is occupied in the firing 'openingwhile, at the same time, the

'I claimi V pressure fluid supply lines to the chambers of l :the'jet plate are readily accessibleandconvenient f chambers or the jet openings or; when desired, n

to reniovethe jet plate.

of the bottom wall of the conduit and including flanged extensions at the sides of and extending above said floor disposed against the flanges of the conduit, and fastening members securing the flanged extensions of the jet plate to said flanges of the conduit, said jet plate including chambers adapted to receive pressure fluid, such chambers having jet openings arranged to discharge therefrom.

2. In a stoker, the combination of a conduit and a jet plate disposed at the delivery end thereof, said conduit having bottom and side walls terminating at the delivery end of the conduit in substantially the same transverse vertical plane and including flanges extending laterally from said side walls in the aforesaid plane, the jet plate having a floor constituting a continuation of the bottom wall of the conduit and including flanged extensions at the sides of and extending above said floor disposed against the flanges of the conduit, and fastening members securing the flanged extensions of the jet plate to said flanges of the conduit, said jet plate including chambers underneath its floor extending into said flanged extensions, said flanged extensions having apertures for the introduction of pressure fluid tothe chambers and said jet plate being provided with jet openings communicating with the chambers for the discharge of pressure fluid therefrom.

3. In a stoker, in combination, a conduit, a jet plate disposed at the delivery end thereof, said conduit having bottom and side walls terminating at the delivery end of the conduit in substantially the same transverse vertical plane, a

flange extending laterally at the aforesaid end of the conduit at each side wall thereof and disposed and each disposed against a respective flange of V the conduit, and fastening members securing the flanged extensions of the jet plate to said flanges of the conduit, said jet plate including a plurality of separated chambers underneath its floor arranged with one of said chambers extending into one of said flanged extensions and another of said chambers extending into the other flanged extension, said extensions having apertures for the introduction of pressure fluid to the chambers and said jet plate including jet openings communicating with the chambers for the discharge of pressure fluid therefrom. V

4. In a stoker, in combination, a conduit, a jet plate disposed at the delivery end thereof, said conduit having bottom and side walls terminating at the delivery end of the conduit in substantially the same transverse vertical plane, a flange extending laterally at the aforesaid end of the conduit at each side wall thereof and disposed in the aforesaid plane, said jet plate having a floor constituting a continuation of the bottom wall of the conduit and said jet plate including a pair of spaced flanged extensions one positioned at each side of and extending above said floor and each disposed against a respective flange of the conduit, fastening members securing the flanged extensions of the jet plate to said flanges of the conduit, said jet plate including a plurality of separated chambers underneath its floor arranged with one of said chambers extending into oneof said flanged extensions and another of said chambers extending into the other flanged extension, said extensions having apertures for the introduction of pressure fluid to the chambers and said jet plate including jet openings communicating withethe chambers for the discharge of pressure fluid therefrom, and a pair of oppositely disposed fuel deflectors mounted at the delivery end of the conduit adjustable over the floor of said jet plate intermediate the flanged extensions thereof.

5. As an article of manufacture, a stoker jet plate when in an operative position including a floor constituting a fuel supporting surface, said jet plate being provided with a plurality of chambers for receiving pressure fluid, and a pair of extensions rising abovev the level of said floor, one at each side thereof, to form a means whereby said jet plate'is secured in its operative position, said extensions being provided with passages communicating with said chambers, said passages having rearwardly opening pressure fluid intake openings in the rearward side of said extensions,

the aforesaid rearward sides of the extensions terminating in the same approximately Vertical plane.

' 6. In a stoker, the combination of a conduit and a jet plate disposed at the delivery end thereof, said conduit having bottom and side walls, and a flange extending laterally from each side wall, the jet plate having a floor constituting a continuation of the bottom wall of said conduit and including flanged extensions at the sides of and extending above said floor and being disposed against the flanges of the conduit, and fastening members securing the flanged extensions of the jet plate to the flanges of said conduit, said jet plate including chambers underneath its floor extending into said flanged extensions, said flanged extensions having apertures for the introduction of pressure fluid to the chambers and said jet plate being provided with jet openings communicating with the chambers for the discharge of pressure fluid therefrom.

7. In a stoker, the combination of a conduit and a jet plate disposed at the delivery end thereof, said conduit having bottom and side walls, and a flange extending laterally from each side wall, the jet plate having a floor constituting a continuation of the bottom wall of said conduit fluid to the chambers and said jet plate including 7 jet openings communicating with the chambers for the discharge of pressure fluid therefrom.

EUGENE MARTIN. 

